title: [Application of computer-aided osteotomy template design in treatment of developmental dysplasia of the hip with steel osteotomy].
abstract: OBJECTIVE
  To provide an accurate method for osteotomy in the treatment of developmental dysplasia of the hip with steel osteotomy by three-dimensional reconstruction and Reverse Engineering technique.
  
  
  METHODS
  Between January 2011 and December 2012, 13 children with developmental dysplasia of the hip underwent steel osteotomy. 3D CT scan pelvic images were obtained and transferred via a DICOM network into a computer workstation to construct 3D models of the hip using Materialise Mimics 14.1 software in STL format. These models were imported into Imageware 12.0 software for steel osteotomy simulation until a stable hip was attained in the anatomical position for dislocation or subluxation of the hip in older children. The osteotomy navigational templates were designed according to the anatomical features after a stable hip was reconstructed. These navigational templates were manufactured using a rapid prototyping technique.
  
  
  RESULTS
  The reconstruction hips in these children show good matching property and acetabulum cover.
  
  
  CONCLUSIONS
  The computer-aided design of osteotomy template provides personalized and accurate solutions in the treatment of developmental dysplasia of the hip with steel osteotomy in older children.
authors.affiliation: Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. tongk@fimmu.com
authors.forename: Kuang
authors.initials: K
authors.lastname: Tong
authors.forename: Yuanzhi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Sheng
authors.initials: S
authors.lastname: Zhang
authors.forename: Bin
authors.initials: B
authors.lastname: Yu
mesh_terms: D002648:Child; D005260:Female; D006618:Hip Dislocation, Congenital / Q000601:surgery*; D006801:Humans; D008297:Male; D010027:Osteotomy / Q000379:methods*; D025321:Surgery, Computer-Assisted